#include "common.h"

int uniquify(unsigned int *a, unsigned int n) {
    int i, j;
    if (n==0) return 0;
    for (i = 0, j = 1; j < n; j++) {
        if (a[j] < a[i])
            return -1;    // array is not sorted in increasing order
        if (a[j] > a[i]) // a[j] is the next distinct integer
            a[++i] = a[j];
    }
    return i+1;
}

int main(int ac, char *av[])
{
    unsigned int A[100];
    int num_distinct, i;

    for (i = 0; i < ac-1; i++)
        A[i] = atoi(av[i+1]);
    num_distinct = uniquify(A, i);
    for (i = 0; i < num_distinct; i++)
        printf("%d ", A[i]);
    putchar('\n');

    return 0;
}
